Method and apparatus for utilizing the heat from cement clinkers.



No. 894,507. PATENTED JULY 28, 1908.

' T. 0. KING-.

METHOD AND APPARATUSFOR UTILIZING THE HEAT FROM CEMENT GLINKERS.

APPLIOATION FILED MAR. 13. 1905.

3 SHEETS-SHEET 1.

WITNESSES:

wow mm 447% INVENTOR 1 V 0. KING. PATENTED JULY 23, 1908, METHOD ANDAPPARATUS FOR UTILIZING THE HEAT PR CEMENT GLINKBRS. APPLIOATION FILEDMAE.13. 1905.

3 SHEETS-SHEET 2.

Ill/lld'l/lIIIII!!!IIf!ffflllllll/lI/l/lllll!llllllll/ A INVENTOR JMJ;

131' lulv Altar-1121' No. 894,507 'PATENTED JULY 28, 1908. T. 0.11m.METHOD AND APPARATUS FOR UTILIZING THE HEAT' FROM CEMENT GLINKBRS.

APPLICATION FILED MAR.13. 1906. 3 SHEETS SHBET a YINVENTOR B1 MrHiram-qr, W

M QM n 4 Km RN UNITED STATES FATE-"NT onnron.

TOM COBB KING, OF NEW YORK, N. Y., ASSIGNOR TO NATIONAL METALLURGIGCOMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

METHOD AND APPARATUS FOR UTILIZING THE HEAT FROM CEMENT CL INKERS.

, new and useful Improvements in Methods and Apparatus for Utilizing theHeat from Cement Olinkers and Nodules Made from Metalliferous Masses, ofwhich the following is a specification. 7

My invention relates to an improvement in method of and apparatus forutilizing heat contained in the products of rotary kilns, andparticularly that class of'kilns used in connection with the manufactureof cement, clinkers and nodules from metalliferous masses; and theinvention relates particularly to a method whereby the heat contained insuch products is withdrawn from the same and then utilized in theprocess conducted in the kiln, as well as in any other convenientmanner. In general practice, the cement, clinkers o1- nodules, which aredischarged from such rotary kilns, is heated to 2000 Fahrenheit andupwards. The product is cooled and disposed of without any utilizationof its latent heat, Whereas this method involves the utilization of theheat contained in the product prior to the final disposition of thesame.

The invention will be best understoodby reference to the accompanyingsheet of drawings, forming a part of this specification, in which Figure1 is a vertical elevation of the apparatus shown in connection with arotary kiln. Fig. 2 is a vertical section 'of the heat extractor and theconveyer. Fig. 3 is a plan view of the heat extractor shown in Fig. 2.Fig. 4 is a modified form of heat extractorJ Similar letters ofreference indicate similar parts throughout the several views.

In Fig. 1 of the drawings, 1 indicates a cylindrical retort or kiln, theinterior of which is lined with fire brick or other refractory material.The retort is provided with a number of tires 2-2, which are riveted orotherwise suitably secured upon the exterior thereof and adapted tooperate u on the rollers 33, which are journaled in earings formed inthe brackets or supports 4-4, the said suports being secure upon thepiers 5-5.

he said retort is also provided with alarge Specification of IiettersPatent. Application filed March 18, 1905. Serial no. 249,735.

Patented. July 28, 1908.

cog wheel 6, which is suitably secured u on the exterior thereof andmeshes with an receives power from the pinion 7, which is driven by-anysuitable power. One of the bearings for said gearing is secured to oneof said piers. The lower end of said kiln or re-- tort terminates at theinner end of the hood 8, which is mounted on the truck 9, which isadapted totravel on the tracks or ways 10, whereby the position of thehood may be changed with relation to the end of said kilnfor anynecessary purpose. The head or closed end of said hood is rovided withtwo orifices, through one of w ich the fuel is introduced to the furnaceby means of the blow pipe 11 from the fuel tank 12, and through thesecond of saidorifices the pro-heated air, saved from the products isintroduced into said furnace through the ipe 15. The upper end of saidkiln, w ich is somewhat higher than the lower end thereof, projects intothe base of the stack 13, the said end being open and in communicationwith a material feed pipe 14, which projects through the base of saidstack into the kiln for the purpose of charging the same. The dischargeof the product at the lower end of the kiln is effected through anopening 17 shown in dotted lines in Fig. 1. The material thus dischargedthrough said opening falls into-a heat extractor through the funnelshape opening 23 at the top of the same as shown inFigs. 1 and 2. Y

The interior construction of the heat extractor is shown in Fi 2. Thesaid extractor consists of a meta lic cylinder composed of interior andexterior shells 24 and 25 respectively between which an air or waterspace 26 is formed. The interior cylinder incloses a space for thereception of the heated material charged therein from the rotary kiln.In the center of said space and coinciding in height to the .cylinder 24is an .air chamber 27 which is connected with the central space of theheat extractor through the pipe 15 in which a controlling valve 32 islocated. When it is desirable to utilize any other purpose, thepre-heated air or water discharged through pipe 15 may be conducted toanother convenient point than that heretofore specified. The inlet andoutlet pipes 29 and 15 respectively are much smaller in area than thechambers 26 and 27 shown in the drawings, so that the air or waterentering and being discharged therefrom has a greater velocity andpressure than through the chambers where the .ra-

'pidity of the flow of the same is greatly reduced.

The cylinder 24 terminates at the base in a cone shaped projection 33,which is provided with an o ening 34 through which the product isdischarged upon the buckets of the conveyer 18, which is adapted tocarry the cooled product to a receiving bin 1.9. The contents ofsaidconveyer are discharged into said receiving bin, and if necessaryfurther cooled by a spray of water from the sprayer 20, which terminatesthe end of the water supply pipe 21. A car 22 is located below thereceiving tank in position-to receive the cooled product.

In Fig. 4 of the drawings I show a modified form of heat extractor inwhich two .cylinders 24 are employed, differing in construction fromthat shown in Fig. 2 in that the modified form of extractor comprises asin 1e cylinder instead of two, as shown in said Flg. 2. These cylindersare closed at the top by the ordinary bell and hop er mechanism 35 asshown, and the prodhct of the kiln is introduced into said cylindersalternately by means of a chute, t e direction of which may be changedde ending upon which of the cylinders 24 1s being charged from therotary kiln, the bell and hopper mechanism being 0 era ted in the usuamanner to effect the ling or charging. The discharge from said cylindersis accom lished by removing plates .36 which close t e discharge opemngin the bottom of the cylinders respectively, the said plates being heldin place by bolts 37 and the swiveled bolt 38, or in any other suitablemanner.

Air or water is introduced through the pipe 29 in the same manner as inthe construction shown in Figs. 1 and 2, the admission thereof beingcontrolled by the valve 30. In this construction the air and water isbrought into direct contact with the heated product charged into thedifferent cylinders. lhe cylinders are connected at the top by the pipe15 which unite in a main pipe 15 whereby the pre-heated air is conductedback, in case air is employed, into the rotary kiln or the heated wateror air may be used for any other purpose, and maybe carried off forfurther disposition to any convenient point. Valve 32' performs the samefunction as valve 32 in the'construction illustrated in Fig. 2. When itis desired to discharge the contents of the rotary kiln, or a portionthereof into either of said cylinders 24 dependingupon which ofthecylinders are being charged, the bell and hopper mechanism is properlyoperated to permit the contents or a portion of the contents of therotary kiln to be charged into said cylinder, and when the same ischarged completely the bell is drawn up. The air or water admitted asheretofore specified comes into direct contact with the heated productjust discharged into said cylinder, and is raised by contact therewithto a high degree of temperature, and asses out through the dischargepipe 15 as -eretofore specified.

The interior of the chambers 24 respectivelyis provided with bafiieplates 40 for the purpose of preventing the products charged thereinfrom passing into the ipes 29and 15 respectively. After the pro uctshave been specially cooled with contact with air or water it isdischarged into cars 22, placed upon tracks the same way, as shown inFig. 1. In this form of my apparatus one of the chambers may be incondition for being charged while the other is cooling the productcharged therein.

Having claim an is described my invention what I desire to secure byLetters Patent 1. The herein described method of utilizing the heatcontained in cement clinkers, and nodules formed from metalliferousmasses,- etc. which consists in discharging the said products from thereceptacle in which they are heated and formed into a suitable chamberand passing a suitable heat absorbing medium through the same, chargingsimilar products into a similar chamber for the purpose of heating thesame, while the heat absorbing medium is being passed throu h the firstchamber, and then passing a suitab e heat absorbing substance throughthe said second chamber for the absorbing the heat, and then uti izingthe heat absorbing medium as it goes from said chamber in any of themanners set forth.

2. The combination of a rotary kiln, a plurality of chambers into whichthe products formed in the kiln are charged, means for alternatelyintroducin the charge into the chambers, means for a ternatelyintroducing the heat absorbing medium into the chamurpose of here aftersaid chambers have been heated by my invention, I have signed my name inthe charge, and devices substantially as depresence of two witnesses,this eleventh day scribed for dischar ing the contents of said of March,1905. a chambers and Wit drawin from each the TOM COBB KING. 5 heatabsorbing medium an conducting the Witnesses:

same to apoint Where it may be utilized. WILLARD PARKER BUTLER.

In testimony, that I claim the foregoing as JOHN FRENCH,

